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Old 05 May 2017, 21:54   #1
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Adv. Chipset - Compatible Settings

Hi Toni, thanks for the last beta, I wanted to ask you if you can, what are the options for these:
Adv. Chipset
Compatible Settings

Chipset Features
CIA ROM Overlay
ROM Mirror (E0)
KB Reset Warning
Custom register byte write bug

I did various configuration tests, clearing these items, everything works the same was for curiosity, I try to emulate the hardware less as emulator to make it faster with OS4.1update1

Also I have selected the 040 chip and powerpc uaegfx, with ECS the emulation seems faster, important or does not work for anything, thanks again for any answer.
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Old 06 May 2017, 13:52   #2
Toni Wilen
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Most of these don't have much effect unless program is doing stupid things. (or if program is some kind of hardware info program or similar)

CIA ROM Overlay = CIA IO bit controls ROM overlay (non-Gayle Amigas). Gayle does it internally when first CIA access is done. (and in CD32 overlay CIA bit is CD audio mute)

ROM Mirror = KS ROM is mirrored in 0xE00000 region (like most Amigas do, one exception is A1000)

KB Reset Warning = Keyboard controller supports "reset warning" = software can detect keyboard reset and has max 10 seconds to do cleanups before reset is forced. (A500 does not have it, most big box Amigas support it)

Custom register byte write bug = normally byte write to custom register writes same value to upper and lower byte. Some 68040/060 boards (for example 68040/060 Blizzard) write correct byte value to even address but zero to odd address. This is common whdload slave fix. (byte write to volume register = always writes zero)

DF0: ID HARDWARE = DF0: returns drive type ID. Mainly supported in big box Amigas. As usual, no support in A500. External drives always have ID support. If ID is not supported, drive type read returns "no drive" ID.
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Old 06 May 2017, 17:01   #3
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Many thanks for the reply Toni,
Good day and thank you again.
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